| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* Copyright(c) 2019 Intel Corporation. */ |
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| 3 | |
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| 4 | #ifndef XSK_H_ |
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| 5 | #define XSK_H_ |
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| 6 | |
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| 7 | /* Masks for xdp_umem_page flags. |
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| 8 | * The low 12-bits of the addr will be 0 since this is the page address, so we |
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| 9 | * can use them for flags. |
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| 10 | */ |
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| 11 | #define XSK_NEXT_PG_CONTIG_SHIFT 0 |
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| 12 | #define XSK_NEXT_PG_CONTIG_MASK BIT_ULL(XSK_NEXT_PG_CONTIG_SHIFT) |
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| 13 | |
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| 14 | struct xdp_ring_offset_v1 { |
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| 15 | __u64 producer; |
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| 16 | __u64 consumer; |
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| 17 | __u64 desc; |
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| 18 | }; |
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| 19 | |
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| 20 | struct xdp_mmap_offsets_v1 { |
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| 21 | struct xdp_ring_offset_v1 rx; |
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| 22 | struct xdp_ring_offset_v1 tx; |
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| 23 | struct xdp_ring_offset_v1 fr; |
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| 24 | struct xdp_ring_offset_v1 cr; |
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| 25 | }; |
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| 26 | |
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| 27 | /* Nodes are linked in the struct xdp_sock map_list field, and used to |
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| 28 | * track which maps a certain socket reside in. |
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| 29 | */ |
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| 30 | |
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| 31 | struct xsk_map_node { |
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| 32 | struct list_head node; |
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| 33 | struct xsk_map *map; |
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| 34 | struct xdp_sock __rcu **map_entry; |
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| 35 | }; |
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| 36 | |
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| 37 | static inline struct xdp_sock *xdp_sk(struct sock *sk) |
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| 38 | { |
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| 39 | return (struct xdp_sock *)sk; |
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| 40 | } |
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| 41 | |
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| 42 | void xsk_map_try_sock_delete(struct xsk_map *map, struct xdp_sock *xs, |
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| 43 | struct xdp_sock __rcu **map_entry); |
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| 44 | void xsk_clear_pool_at_qid(struct net_device *dev, u16 queue_id); |
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| 45 | int xsk_reg_pool_at_qid(struct net_device *dev, struct xsk_buff_pool *pool, |
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| 46 | u16 queue_id); |
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| 47 | |
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| 48 | #endif /* XSK_H_ */ |
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| 49 | |
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